Spiral note-sheet.



No. 657,682. Patented Sept. H, I900. A. STAFFELSTEIN &. F. KLUGE.

SPIRAL NOTE SHEET.

(Application filed Mar. so, 1900. (N o M o d a l Xxx/11h a sea 5 Iny a1111: I:

L w MAW r Arr UNIT D. STATES PATENT OFFICE.

ADOLF STAFFELSTEIN, OF ALBERSDORF, AND FRANZ KLUGE, OF LEIPSIO GOHLIS,GERMANY.

SPIRAL NOTE-SHEET,

SPECIFICATION forming part of Letters Patent No. 657,682, datedSeptember 11, 1900.

Application filed March 30, 1900. Serial No. 10,818. (No model.)

To all whom it may concern:

Be it known that we, ADOLF STAFFELSTEIN, of Albersdorf, near MarkRanstadt, and FRANZ KLUGE, of Leipsic-Gohlis, in the Kingdom of Saxony,Germany, subjects of the King of Saxony, have invented a certain new anduseful Improved Spiral Note-Sheet, of which the following is a full,clear, and exact description.

TO The presentinvention relates to note-sheets for mechanical musicalinstruments; and it consists of the details of construction hereinafterset forth, and particularly pointed out in the claim.

In order to render the specification easily intelligible, reference ishad to the accompanying drawings,in which similar letters of referencedenote similar parts throughout both views.

Figure 1 is a side elevation of the notesheet, and Fig. 2 a frontelevation of one part of the same.

Hitherto spiral note sheets or disks have been constructed in order toproduce a continuous repetition of tunes; but these sheets haveconsisted of a band or strip wound in a spiral form, and it has beenvery difiicult to get all parts of the strip in proper position, so asto produce the tune properly. According to the present invention aspiral note disk or sheet is produced which is formed of a series ofordinary circular note-disks.

The invention consists in taking a number of ordinary note-disks a,having one and the same or different tunes thereon and provid- 5' ingeach with an arc-shaped slot 8 and a ra dial slot 75, extending fromabout the center of the arc-shaped slot to the circumference of thedisk, each disk having only a small circular opening to enable it to beplaced on the shaft of the music-works. In this manner a spiralnote-disk is formed having absolutely exact notation, since it is formedof a series of ordinary note-disks joined together at the edges of theradial slots, as will be evident from the drawings.

We claim as our invention- A spiral note-sheet for mechanical musicalinstrumentsconsisting of a series of circular note-disks, each having anarc-shaped slot formed therein and a radial slot extending from thearc-shaped slot to the periphery, the said disks being connectedtogether along the corresponding edges of the radial slot substantiallyas described and for the purpose 5 5 specified.

In witness whereof we have hereunto set our hands in presence of twowitnesses.

ADOLF STAFFELSTEIN. FRANZ KLUGE.

Witnesses:

HERM. LAUB, RUDOLPH FRIoKE.

